Mawloud Djeghloul

Space Switcher is an animation addon for Blender that offsets the animation of selected bones, toggles constraints on and off, clears them, shows or hides manipulation proxies, and sets a baking range.

Armscale Fixer is a Blender add-on that applies armature scale without breaking animations. Access it from the Properties panel under Armature or with the CTRL + A shortcut, and it can fix multiple animations at once.